Electrical vibrator.



M K. GOLDEN.x

ELEGTRIUAL VIBRATOR.

APPLICIATION FILED 3111.15, 1908.

Patented July 13, 1909.

WITNESSES: W V I of! UNITED STATES PATENT OFFICE.

MAXIMILIAN K. GOLDEN, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO JAMES JEROME,

' OF SAN FRANCISCO, CALIFORNIA.

ELECTRICAL VIBRATOR.

view with the cap removed. Fig. 2 is a vertical section of same.

It is the object of my invention to produce a vibrating device which may be operated, either by direct or alternating current and without the use of sparking device, induction current, or make and break mechanism,

such as is usually employed forsuch devices.

The invention is applicable for moving reciprocating parts of any kind which can be so moved, such as the ringing of bells, the actuating of massage or percussion implements, or anything of like character.

In the present case I have shown an inclosing shell A which is adapted to contain an electromagnet 2. This electromagnet is mounted upon a yielding or spring arm, or equivalent 3 which is here shown fixed at one side 4 within the casing A, so that by means of this movable arm the magnet, itself, is capable of motion in connection with the arm. The armature of this magnet, shown at 8, is fixed to the sideof the case so that when the electromagnet is alternately energized and deie'nergized, the armature being stationary, the magnet 2 will be attracted to and released and will thus move with its arm 3. In order to regulate the amplitude of the vibrations I have shown a screw 13 which may have a milled head 14 upon the outside, and the interior shank of the screw may "be surrounded by a spring 15 which contacts with the arm 3 so that by compressing the spring, the arm may be forcedback to increase the distance between the armature and the electro1na met. and correspondingly increase the amplitude of vibration of the magnet. It may be in like manner reduced by decreasmg the tension of the spring. This Specification of Letters Patent.

Application filed January 15, 1908.

Patented July 13, 1909. Serial No. 410,946.

adjustment may be made by turning the screw in'eit her direction, the screw passing through a nut in the side of the case. The screw-shank carries a polygonal nut 12, the

sides of which contactwith a spring, or elastic arm 16, fixed to the side of the case in such position that as each side ofthe nut is brought into contact with the elasticarm, it will be retained and prevented from further turning, and this insures any adjustment which has been made being maintained without danger of the screw being gradually turned by the vibrating action or other means.

In linewith the screw 13, and within the coil spring 15, is a short stem 17, one end of which is secured to the elastic arm 3, and the other extends toward the inner end of the screw 13; and it will be seen by this construction that when the spring 15 is compressed, by turning the screw 13 inwardly, the conti'guous' ends of the two stems may 'be'caused to approach, or be brought together, and when the screw is turned in the opposite direction and withdrawn, the distance between the two will be increased. Thus the amplitude of vibration of the spring 3, caused by the action of the magnet, can be accurately adjusted to any desired degree. It will be seen by this construction that these vibrations and movements of the magnet may be effected by an alternating current, the magnet being properly wound so that the alternate attraction and repulsion of the magnet with relation to its armature, will take place. If the device is to be used with a direct current, an interrupterfor the primary current may be employed with a like result.

The great advantage of this constructlon is that the expensive make and break mechanism, with the necessary induction current and s arking device, are entlrely'elmnnated, and or the purpose of bell ringing in connection with telephones, or in any place where bells are used, it will make a very great saving in the expense of such apparatus. It is also available for massage. 1n-

' struments, in which connection I have shown the device in the present apparatus. In such a device, the case A may be provided with a handle 10, which is preferably made to carry a cable 9, and said cable carries separate insulated wires which are properly connected with the magnet coils, as shown at 11. I

have shown an opening 7 in one side of the case A, and an arm 6 fixed to the vibrating arm 3 extends through the case, and carries upon the outer end a massage implement 5 which is here shown as bell-shaped but may be of any other description. In line with the adjusting stem 13, or approximately so, is another arm as at 18 so disposed with'relation to the. vibrating arm 3 that the latter may act upon this arm 18 to move it longitudinally. Thus an implement attached to i the end of the arm 18, would be moved longitudinally with a patting movement instead of transversely as in the case of the imple ment 5. Either of such connections may be made as previously stated, with bell or other contrivances, and whatever the connection made, the vibrations may be transmitted in this manner.

The operation of the device'is easily understood. The vibrations of the electromagnet, which is of considerable weight, impart a very positive movement to the connected part which is to be moved thereby; and under rapid vibration the inertia caused by the weight of the parts, will cause a vibration of the exterior casing as well as that of the magnet.

Having thus described my'invention, what I claim and desire to secureby Letters. Patent is 1 In an apparatus of the character described, a case, a vibrating arm having one end fixed to the case, the other end free, having connection for a tool or implement, an electromagnet fixed to said vibrating arm and movable therewith, a. stationary armature fixed with relation to the electromagnet, whereby the energizing and deenergizing of said magnet causes it and the tool-carrying arm to be oscillated with relation .to the armature, means for regulating the vibrations, said means includlng a stem fixed to,

and projecting from, the vibrating arm, a screw stem carried by the case and adjustable in line with the first-named stem, and a spiral spring connecting the vibrating arm and the adjusting screw.

2. In an apparatus of the character described, an arm fixed at one end and free at the other, an electro'magnet fixed to said arm,

a fixed armature,'with relation to which the electromagnet and its arm are capable of vibration, means for transmitting the move-.

my hand in presence of two subscribing witnesses.

MAXIMILIAN K. GOLDEN. Witnesses: I

' GEO. H. STRONG,

CHARLES A. PENFIELD. 

